文献类型：期刊文献

英文题名：Ru-supported Cu nanowire catalyst enabling to suppress C-C coupling for high-selectivity ethylamine electrosynthesis

作者：Xing, Dong[1];Dong, Lei[1];Qi, Yanbin[1];Ge, Wangxin[1];Jiang, Xiaoli[1];Zhao, Yuan[1];Zhang, Wenfei[1];Tian, Pengfei[2,3];Jiang, Hongliang[1,4];Li, Chunzhong[1,4]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2024

卷号：70

期号：5

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20240615524591);WOS:【SCI-EXPANDED(收录号:WOS:001158167400001)】；

基金：This work was supported by the National Natural Science Foundation of China (22222804, U22B20143 and 21838003), the National Key R&D program (2022YFB3808400), the Science and Technology Commission of Shanghai Municipality (22dz1205900), and the Shanghai Municipal Science and Technology Major Project.

语种：英文

外文关键词：acetonitrile hydrogenation; active hydrogen; C-C coupling; ethylamine; selectivity

摘要：Electrochemical acetonitrile hydrogenation compared with thermocatalytic hydrogenation provides a potential route to produce ethylamine in mild conditions. It is challenging to suppress the C-C coupling for improving ethylamine selectivity. Here, Ru-supported Cu nanowire catalysts (Ru-Cu NWs) are designed to achieve nearly 100% specific selectivity of ethylamine without coupling byproducts. In situ vibrational spectroscopy and electron spin resonance results reveal that the Ru-Cu NWs provide a high active adsorption hydrogen (H*) coverage at the electrified interface so that the imine intermediates are more readily hydrogenated to generate ethylamine, thus suppressing the C-C coupling. Density functional theory calculations disclose that the formation of H* occurs more readily over Ru-Cu NWs than Cu NWs. Moreover, the presence of Ru changes the potential-determining step and facilitates the entire hydrogenation process. The strategy and understanding established here can be extended to other electrocatalytic hydrogenation reactions.